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Preparation and crystal structures of the mononuclear vanadium phenoxide complexes [VCl(OC6H3Pr2i-2,6)2(C4H8O)2] and [VO(OC6H3Pr2i-2,6)3]: procatalysts for ethylene polymerisation.
Autorzy
Rok wydania
1998
Czasopismo
Journal of Organometallic Chemistry
Numer woluminu
554
Strony
195-201
DOI
10.1016/S0022-328X(97)00774-2
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
The complexes [VCl(OC6H3Pri2-2,6)2(thf)2] 1 (thf, tetrahydrofuran) and [VO(OC6H3Pri2-2,6)3] 2 have been prepared and structurally characterised. Compound 1 has a distorted trigonal bipyramidal structure with apical thf ligands [d(V–Ophenox) 1.865(2), d(V–Othf) 2.120(3) and d(V–Cl) 2.277(2) Å]. It reacts with Li[SC6H2Me3-2,4,6] to give [V(SC6H2Me3-2,4,6)(OC6H3Pri2-2,6)2(thf)2]. Compound 2, which has trigonal pyramidal geometry, is disordered about a 2-fold crystallographic axis [d(V=O) 1.564(4), d(V–Oav) 1.761(1) Å]. Compounds 1 and 2 are pro-catalysts for the polymerisation of C2H4.
Adres publiczny
https://doi.org/10.1016/S0022-328X(97)00774-2
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